Gcode Sender (editable 32 button remote control for your printer/CNC)

Note: A new wireless version can be found here: http://www.thingiverse.com/thing:2313781. Wireless version uses serial bluetooth modules.

This project is very much like using Pronterface or Repetier Host manual control to send gcode instructions to your printer while connected to the computer via USB cable, but instead using an Arduino Nano connected to a small keypad to send the Gcode scripts/macros.

Gcode sender is intended to work for 3D printers as well as a CNC mills and laser engravers. Any machine that uses gcode.

This setup allows one to send highly customized gcode scripts/macros to the printer with a push of a button. I've tested all of the scripts I included in the sketch. Any one of them can be replaced or edited.

In the sketch, i tired to include a lot of comments to make it easier to tweak the code to suit your own needs.

Communication between Gcode Sender and printer is through serial communication (Tx, Rx). On RAMPS style boards the AUX-1